Histo BlockII Cardio lecture 2 part 1

• A Pulmonary Circuit
• B Pulmonary Arteries
• C. Vena Cava
• D. Systemic Circuit
• E. Aorta and Branches
• F Pulmonary Veins

• Fenestrated Capillaries for absorption via pinocytosis (pinch off drinking).  Kissable Gentleman Intimately Exfoliate : Kidney Gall bladder, Intestine, Endocrine Glands
• A: pericyte (contractile cells surrounding endothelial cells of capillaries)
• B:Basal Lamina
• C: Fenestrations from Pinocytosis
• D: Pinocytotic vesicles

• A: Pinocytotic Vesicles
• B. Fenestrae

Fenestrae enclosed by diaphragms made by glycocalyx pinched off in pinocytosis. Found in intestine & gall bladder for absorption. NOT found in glomeruli of kidney.

• –during no absorption•have fewer fenestrae•thicker wall–during absorption• During ABSORPTION Increased fenestrae and pinocytotic vesicles•walls thin

• A Basal Lamina
• B Endothelium
• C Podocyte

• A: Portal Canals
• B. Central Vein (drains)
• C. Sinusoids (liver)
• All are sinusoids in liver!

• Discontinuous Capillary (large spaces between endothelial cell)
• A. RBC
• B. Endothelial cells
• C. Discontinuous Gaps between endothelial cells aka space of Disse
• D. ?? Hepatic cells?

• H: Hepatocytes (liver cells) with nucleus, mitochondria & organelles
• S: Endothelial cells and nucleus
• E: Lumen?
• D. Space of Disse
• L?
• BC?

• A face liver endothelial cell
• EV= endothelial pits
• P= pinocytic openings

B face;  liver endothelial cell;  EV = small dome shaped  hemispheres of pinocytotic vesicles;  arrows show pinocytotic vesicle necks broken so only the rims of the openings remain (arrows)

• A.sinusoids (light pink rows)
• B. Megakaryocyte (2)
• C. erythroblast islet (collection of rbc dark cells)
• D. Red pullp in spleen contains Splenic Sinusoids

• A: arteriole
• B. venule

• Left: Arterial
• Right: Venule

• A: smooth muscle cell
• B. Venule
• C. Arterioles

• A: arteriole
• B. venules

• A. Arteriole
• B. venule
• C. Arteriole

• A:  Arterioles
• B. Lymphatic Vessel
• C. Arterioles
• D. Venules

• Right: medium vein
• Left: muscular artery

• Left: more tunica adventitia is Median Vein.
• Right: see muscle cells so muscular artery

• A. mesenteric artery
• B. mesenteric vein

• A. Tunica adventitia
• B. Tunica media
• C. Tunica intima
• D. endothelial cells
• E. basal lamina

• A: Endothelium
• B. Tunica intima
• C. Tunica media
• D. tunica adventitia
• E. Longitudinal bundles of smooth muscle